Combined intake and exhaust manifold



G. F. CLARK.

COMBINED INTAKE AND EXHAUST MANIFOLD APPLICATION FILED DEC.'2].1919.

1,399,930, Patented Dec. 13, 1921.

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WITNESSES G. F. CLARK.

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UNITED STA MEN OFFlCfi j l GEORGE FLORIAN CLARK, OF DES MOINES, I O'WA..

Application filed December 27, 1919. SerialNo. 347,673.

To all whom it may concern:

Be it known that I, Gnonen FLoRIAN CLARK, a citizen of the United States, and a resident of Des Moines, in the county of Polk and State of Iowa, have invented certain new and useful Improvements in Combined Intake and Exhaust Manifolds, of which the following is a specification.

My present invention relates generally to gaseous fuel Vaporizers and more particu-' illustrate my invention and form a part ofv this specification,

Figure 1 is a side view illustrating the practical application of my invention,

Fig. 2 is a sectional perspective view of a portion of the invention removed, and

Fig. 3 is a vertical transverse section taken substantially on line 33 of Fig. 1.

Referring now to these figures the combined device proposed by my invention includes laterally spaced inner and outer walls 10 and 11 respectively, the space between which is entirely open to the inner ends of laterally projecting tubular exhaust connections 12 which are arranged along the upper portion of the manifold so as to thus place the several exhaust connections in open communication with the body of the manifold or rather the space inclosed by its walls, one end of which tapers to'an exhaust pipe connection 13 seen in Fig. 1.

Integral with the outer wall 11, of the.

manifold is a gaseous fuel passage with the lower horizontally disposed portion 14 of which an intake pipe 15 communicates. This pipe has a flanged end 16 for connection with a carbureter 17 seen in Fig. 1 so that the carbureted fuel readily finds its way into the portion 14L of the fuel channel. At its opposite ends the lower portion 14 communicates with upwardly and inwardly curved portions 18 of the channel, the upper portions of whose inner ends curve up- Specification of Letters Patent.

COMBINED INTAKE AND EXHAUST MAN 'IFOLED;

Patented Dec. 13, v1921.

inner ends of the curved portions 18 of the channel communicate with the upper lengthy horizontal portions 20 of the channel through an elongated relatively narrow passage way 21, which is narrowed by virtue of being indented from outside of the mani fold as clearly seen in Figs. 2 and 3.

The result of this structure is that the mixture is divided into two portions immediately upon its reception within the lower horizontal portion14 of the fuel channel, the portions so divided passin upwardly around the curved channel portions 18 and joining with one another for passage vertically at the choked portion of the channel so as to cause thorough intermixing of the same immediately prior to their movement through the relatively narrow passage 21 by means of which they are thrown against the inner portion of the wall of the channel at the center of its upper horizontal distributing section 20 and also give them a swirling motion by virtue of their entrance into the upper section 20 of circular cross I have found that by means .of a combined 7.

manifold of this nature, approximately one half of the intakechannel of which is exposed to the hot exhaust gases passing through the manifold body, together with the other'features described, it is possible to uniformly and thoroughly heat'the fuel and at the same time avoid all danger of over heating by virtue of'the formation of the intake fuel channel in the outerwall of the combined manifold. which is obviously spaced considerably'fapart from the engine in connection with which it is utilized. 1

By thus properly and uniformly heating' the fuel, more thorough consumption is promoted, the collection of carbon avoided and economy in fuel effected, and I have'found that various fuels may be utilized with good results where previously gasolene has been required.

I claim: A combined intake and exhaust manifold comprising a body having inner and outer spaced walls forming an exhaust passage therebetween, laterally vextending intake and I exhaust connecting tubes, the exhaust tubes nication at its opposite ends with the tubular intake connections, a lower horizontal portion in communication with the intake 7 pipe, curved sections extending upwardly and inwardly into one another from the ends or the lower horizontal portion and partially choked at their upper meeting ends by a laterally constricted section forming a relatively narrow slot like passage way above the upper meeting ends of the curved sections and between the same and the distributing portion approximately at the center of the latter, said upper meeting ends of said curved sections having a fuel guiding portion to deflect fuel upwardly through said slot-like passage.

GEORGE FLORIAN CLARK. 

